| article html file updated | 7 February 2020 09:53 CET | Update | https://www.mdpi.com/2077-1444/7/6/70 |
| article html file updated | 5 May 2019 13:29 CEST | Update | N/A |
| article html file updated | 27 March 2019 06:58 CET | Update | N/A |
| article html file updated | 29 June 2016 11:29 CEST | Update | N/A |
| article html file updated | 8 June 2016 15:17 CEST | Original file | N/A |
| article xml uploaded. | 8 June 2016 15:16 CEST | Original file | https://www.mdpi.com/2077-1444/7/6/70/xml |
| article pdf uploaded. | 8 June 2016 15:16 CEST | Version of Record | https://www.mdpi.com/2077-1444/7/6/70/pdf |
